Piston pump having a cylinder barrel

Abstract

A piston pump for delivering fluids includes a piston configured to be driven to perform a reciprocating stroke movement. The piston pump includes a cylinder barrel in which the piston is held in an axially displaceable manner. The piston pump also includes a displacement chamber which is arranged in the cylinder barrel between an inlet valve and an outlet valve. The outlet valve is arranged on a cylinder barrel base, and, on a side of the cylinder barrel base which faces away from the displacement chamber, an annular projection is formed. The annular projection is configured to surround an installation space for the outlet valve.

1 . A piston pump for delivering fluids, comprising:
 a piston configured to be driven to perform a reciprocating stroke movement;   a liner configured to receive the piston such that the piston is axially displaceable;   a displacement chamber arranged in the liner between an inlet valve and an outlet valve; and   a liner base,   wherein the outlet valve is arranged on the liner base, and   wherein an annular extension of the liner is configured to enclose an installation space for the outlet valve, the annular extension formed on a side of the liner base that is remote from the displacement chamber.   
     
     
         2 . The piston pump as claimed in  claim 1 , further comprising a circumferential recess formed on the side of the liner base that is remote from the displacement chamber. 
     
     
         3 . The piston pump as claimed in  claim 2 , further comprising a radial duct configured to connect the installation space to the circumferential recess, the radial duct formed in the liner. 
     
     
         4 . The piston pump as claimed in  claim 1 , further comprising a closure element configured as a closure cap, the closure element attached to the annular extension. 
     
     
         5 . The piston pump as claimed in  claim 4 , wherein the closure element is made of aluminum. 
     
     
         6 . The piston pump as claimed in  claim 4 , wherein the closure element is produced by machining. 
     
     
         7 . The piston pump as claimed in  claim 4 , wherein the outlet valve includes:
 a closing member;   a pre-tensioning device; and   a base element configured to support the pre-tensioning device.   
     
     
         8 . The piston pump as claimed in  claim 7 , wherein the closing member is a ball. 
     
     
         9 . The piston pump as claimed in  claim 7 , further comprising a space configured to accommodate a damping device, the space arranged between the closing member and the closure element.